ArticleScientific reports2016
Homogeneous diet of contemporary Japanese inferred from stable isotope ratios of hair.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 30 citations in OpenAlex.
- Book-embedded hair reveals mineral-rich diets among urban commoners in early modern to modern Japan.Scientific reports · 2026Article
- Carbon and Nitrogen Isotope Composition of Australasian Hair and Fingernails in a Global Context.Rapid communications in mass spectrometry : RCM · 2025Article
- Heterogeneity of gut microbiome compositions in the third decade of life in Japanese women: insights from a comparative analysis.Bioscience of microbiota, food and health · 2024Article
- Human diet of premodern mainland Japan: a meta-analysis of carbon and nitrogen stable isotope ratios.Anthropological science : journal of the Anthropological Society of Nippon = Jinruigaku zasshi · 2024Article
- Modern Japanese ancestry-derived variants reveal the formation process of the current Japanese regional gradations.iScience · 2023Article
- Dietary homogenization and spatial distributions of carbon, nitrogen, and sulfur isotope ratios in human hair in South Korea.PloS one · 2021Article
- Stable isotopes in hair reveal dietary protein sources with links to socioeconomic status and health.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Assessing geographic controls of hair isotopic variability in human populations: A case-study in Canada.PloS one · 2020Article
- Hairs in old books isotopically reconstruct the eating habits of early modern Japan.Scientific reports · 2018Article
- Urban and nomadic isotopic niches reveal dietary connectivities along Central Asia's Silk Roads.Scientific reports · 2018Article
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The globalization of food production and distribution has homogenized human dietary patterns irrespective of geography, but it is uncertain how far this homogenization has progressed. This study investigated the carbon and nitrogen isotope ratios in the scalp hair of 1305 contemporary Japanese and found values of -19.4 ± 0.6‰ and 9.4 ± 0.6‰ (mean ± SD), respectively. Within Japan, the inter-regional differences for both isotope ratios was less than 1‰, which indicates low dietary heterogeneity among prefectural divisions. The carbon and nitrogen isotope ratios of the hair showed a significant correlation with the results of questionnaires on self-reported dietary habits. The carbon isotope ratios from Japan were lower than those in samples from the USA but higher than those in samples from Europe. These differences stem from the varying dietary proportions of food products originally derived from C3 and C4 plants. The dietary variation of Japan is as small as those of Europe and USA and smaller than those of some Asian countries. These results indicate that dietary homogeneity has progressed in Japan, which may indicate the influence from the spread of the Western-style diet and food globalization, although dietary heterogeneity among countries is still preserved.
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